JRiver also supports MadVR for video rendering, so you can have nice upscaling algorithms (e.g. Jinc windowed Sinc functions) and use a 3D-LUT for display colour correction.
You can also use MadVR with the free and open source MPC-HC player.
You will need a decent GPU for MadVR though ...

I no longer own any laptops. Everything in our house is a tablet: multiple Nexus 7s, multiple iPad 4s, and a Surface Pro. In fact, the only traditional computers I own are my triple-monitor desktop home office beast, and the small Home Theater PC (HTPC) that drives all our home entertainment in...